Wyoming State Water Plan, Wyoming Water Development Office
Rafting on Snake River Lake Marie, Snowy Mountains Wyoming Wind River Range picture

STATEWIDE FRAMEWORK PLAN: Updated Data Tables
2007: Data Table

Average Annual Streamflow and Uses - Mid-Level Development - Dry Condition from Most Recent Update
Basin State Line Outflow - Natural Conditions1 Depletions of Streamflow to Wyoming Depleted Streamflow Leaving Wyoming3 Wyoming's Remaining Share Under Compact
Irrigation2 Municipal, Domestic, & Stock2 Industrial2 Reservoir Evaporation2 Total2
ac-ft
GREAT BASIN
 Bear River (2011)   202,903   92,300   3,231   74   5,361   100,966   101,937   9,790 
COLORADO RIVER
 Green River (2010)4   1,452,316   399,480   34,296   123,700   122,600   680,076   772,240   193,924 
MISSOURI RIVER
 Northeast Wyoming (2003)5   145,300   72,800   0   0   23,500   96,300   49,000   2,500 
 Platte River (2006)6   1,110,800   484,600   27,100   61,300   213,800   786,800   324,000   0 
 Powder/Tongue River (2002)   733,300   194,000   15,000   17,000   11,300   237,300   496,000   248,100 
 Wind/Bighorn River (2010)   3,106,100   1,027,900   14,900   1,235   160,200   1,204,235   1,901,900   1,404,200 
 Yellowstone River (2010)7   2,558,800   0   0   0   0   0   2,558,800   0 
COLUMBIA RIVER
 Snake/Salt River (2014)8,9,10   2,506,613   80,601   376   0   72,175   153,152   2,353,461   96,321 
Total  12,063,500   2,681,700   94,300   223,400   586,100   3,585,500   8,478,000   2,138,800 
Note: Blanks indicate that information was not presented in the individual basin plans.

Values in RED indicate basins updated since previous statewide plan.
  1. Estimates are based on outflow plus depletions from the current river basin plans.
  2. Depletion estimates are from the current river basin plans.
  3. Depleted flows are based on outflow estimates from the current river basin plans.
  4. Municipal, domestic and stock Includes diversions for the City of Cheyenne, but excludes Stock which is included under irrigation (Agriculture). Reservoir evaporation includes 17,000 ac-ft assigned for future environmental depletions. Remaining Share under Compact assumes 847,000 ac-ft allocation.
  5. Excludes the flows for the Little Missouri and Niobrara Rivers.
  6. The Platte River system is fully appropriated: a water right with a current-day priority cannot be expected to provide a reliable supply. Estimates exclude the flows and depletions from the Horse Creek and South Platte drainages.
  7. Drainage area is within Yellowstone National Park and includes estimates for the Madison, Gibbon, Firehole, and Gallatin Rivers.
  8. Excludes the flows for the Henrys Fork and Teton Rivers. Includes the flow of the Greys River.
  9. Total Depletions, not Post Compact Depletion.
  10. 20-Year Projections.